Well I am lazy ass law student, and since we are on a law related issue I guess i will respond,
Amendment I of the COnstitution bars congress from making laws "respecting an establishment of religion or prohibiting the free exercise of" This is the all the constitution has to say on religion, and for that matter God. In 1995 the supreme court in Rosenberger v Rectors the dissent of the liberal wing under Souter stated, that this first amendment clause forbidsnot only government preferences for some religious sects over others , but also governmental preferences for religion over irreligion. The majority conservative wing under Thomas, stated that the first amendment should be seen as simply a prohibition on governmental preferences for some religious faiths over others. Thus, it is clear that the liberal wing would indeed find that God in the pledge of allegiance shold not be allowed as the government is prohibited to prefer religion over irreligion, ie a belief in God. Yet, the conservative wing is still in control, and will most assuredly toss the Federal District Judge's ruling out, as a belief in God does not mention any preference of one religion over another, also they will most assuredly refer to the intent of the framers of the constitution, and will hypothesize the founders would never have envisioned one nation under god, as conflicting with the first amendment.
Personally I really dont care, but I tend to side with the liberals, as the conservative wing is truly nuts. Sorry for the message, it is sort of a summarization of a short essay I had to prepare for a summer Con law class, as you can imagine this is very boring stuff.
